The OPAx863 are classic voltage-feedback amplifiers with two high-impedance inputs and a low-impedance output. These devices have a GBW of 50 MHz, 5.9 nV/√Hz of noise, RRIO capability, and precision performance consuming only 700 µA quiescent current per channel These features make the OPAx863 an excellent choice for use in low-side current sensing, ADC input driver, and reference buffering with fast settling, buffers, high gain and filter circuits. The overload power limit makes the OPAx863 truly low-power in high-gain, multichannel systems limiting any increase in quiescent current during output overload conditions.